PRE-CRASH SAFETY SYSTEM, Diagnostic DTC:C1A0A

DTC Code DTC Name
C1A0A Front Radar Sensor Region Code Mismatch

DESCRIPTION

The driving support ECU uses the millimeter wave radar sensor assembly to detect obstacles in front of the vehicle. Based on this information, the driving support ECU sends pre-crash control operation signals.

When the millimeter wave radar sensor is replaced with a new one, it acquires the country specification information from the driving support ECU. Also, when the driving support ECU is replaced with a new one, it receives country specification information from the main body ECU. When country specification information in the sensor and driving support ECU do not match, DTC C1A0A is output.

DTC Code DTC Detection Condition Trouble Area
C1A0A While the initial check is running, the ignition switch is ON and the pre-crash safety system is operating, the country specification information in the driving support ECU and millimeter wave radar sensor do not match for 1 second.

  • Millimeter wave radar sensor assembly

  • Driving support ECU

INSPECTION PROCEDURE

PROCEDURE


  1. CHECK MILLIMETER WAVE RADAR SENSOR ASSEMBLY


    1. Change the millimeter wave radar sensor assembly to aiming adjustment mode Click here.

      Tech Tips

      Aiming adjustment does not need to the performed. When the millimeter wave radar sensor assembly is changed to aiming adjustment mode, specification information is acquired from the driving support ECU.


    NEXT

  2. CHECK FOR DTC


    1. Clear the DTCs Click here.

    2. Check for DTCs Click here.

      OK
      DTC C1A0A is not output.

    NG

    REPLACE MILLIMETER WAVE RADAR SENSOR ASSEMBLY Click here

    OK

    END

  3. REPLACE MILLIMETER WAVE RADAR SENSOR ASSEMBLY


    1. Replace the millimeter wave radar sensor assembly Click here.


    NEXT

  4. ADJUST MILLIMETER WAVE RADAR SENSOR ASSEMBLY


    1. Adjust the millimeter wave radar sensor assembly Click here.


    NEXT

  5. CHECK FOR DTC


    1. Clear the DTCs Click here.

    2. Check for DTCs Click here.

      OK
      DTC C1A0A is not output.

    NG

    REPLACE DRIVING SUPPORT ECU Click here

    OK

    END (MILLIMETER WAVE RADAR SENSOR ASSEMBLY IS DEFECTIVE)